Horizontal gas or vapor electric lamp.



No. 738,323. PATBNTED SEPT. s, 1903. P. 0. HEWITT.

HORIZONTAL GAS OR VAPOR ELECTRIC LAMP.

1 APPLICATION FILED SEPT. 18, 1902. N0 MODEL.

- 2 5 purposes and the like.

-40 in proximity to abulb or enlargement 4. On

UNITED STATES Patented September 8, 1903.

PATENT OFFICE.

I PETER COOPER HEWITT, OF NEW YORK, N. -Y., ASSIGNOR, BY MESNE AS- SIGNMENTS, TO COOPER HEWITT ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

HORIZONTAL GAS OR VAPOR ELECTRIC LAM P.

SPECIFICATION forming part of Letters Patent No. 738,323, dated September 8, 1903..

Original application filed March 21, 1902, Serial No. 99,333. Divided and this application filed September 18, 1902. Serial To all whom it may concern:

Be it known that I, PETER COOPER HEWITT, acitizen of the United States, and a resident of New York, in the county of New York and 5 State of New York, have invented certain new and useful Improvements in Horizontal Gas or Vapor Electric Lamps, of which the following is a specification.

The present application relates to improveo ments in gas or vapor electric lamps, the lamp herein described being designed for operation in a horizontal position. By supporting one of my lamps in such a position and providing it with means for adjustment along any one of a :5 large number of radii I can provide a wide field of illumination, while a horizontally-disposed lamp having a luminous element of considerable length placed in the upper part of a room furnishes a kind of illumination which 20 is agreeable to the eye and is well adapted to display the special features of architecture, decoration, or furniture which the room may possess. At the same time a source of illuminatin so disposed is agreeable for reading The drawing illustrates, in elevation and partly in section, a lamp of this sort, together with its bracket or support.

The main body of the lamp consists of a go transparent tube or container 1, within which are held suitable electrodes 2 and 5. The last-named electrode is of mercury or other suitable material, while the former may be either of mercury or iron or other material 5 adapted to the purpose. The electrode 2 is connected through the walls of the lamp to a lead-wire 7, and the electrode 5 is similarly connected to a lead-wire 8. The negative electrode is arranged in the lamp illustrated opposite sides of the bulb or enlargement 4 are logs or extensions 15, which may be formed in the glass and may, if desired, be

hollow. When the lugs are hollow, it is con- 5 venient to have the mercury electrode 5 occupy the hollow portion of the lamp, as illustrated.

As a detail of construction I may form in or on the glass at the end near the positive electrode a bead or lug 10, as shown. The

(No model.)

lamp may, in fact, be sealed oli at this point,

and the part 10 may be simply the seal-01'1". However, the lamp may be sealed off at any preferred point, and the part 10 may be dispensed with altogether. When present, it may serve as an intermediate means of support for a wire 13, which is connected at one end to the lead-wire 7, running to the electrode 2, and at the other end, after running the length of the tube 1, may be wound about one of the extensions 15 and around the rear end of the lamp back of the negative electrode, as shown at 11. This rear end of the lamp is first covered, however, with tin-foil 9 or other metallic foil, the foil being also carried down around the enlargement to a point just above the level of the electrode 5. A suitable metallic paint may be substituted for the metallic "foil. The lamp as a whole is supported in any convenient man- 7 ner-as, for instance, by inserting the lugs or extensions 15 15 in the eyes of a U-shaped spring supporting-piece 16 or suitable form of socket.

In practice I have found that although the lamp is thus held in a horizontal position the liquid in the tube does not accumulate at the positive end of the lamp, but remains at the negative end, which owing to the construction is the coolest part. This is probably due in part to the fact that the enlarged portion of the chamber about the negative electrode acts as a condensing-chamber and in part to certain electrolytic actions tending to carry the mercury from this position to the negative electrode. 1

. The support 16 may be secured by screws or otherwise to a vertical wall or a vertical support of any suitable sort, and the lugs can be inserted in place by first separating the spring-arms of the supporting-piece and then allowing the arms to drop back, so that the eyes surround the lugs or extensions 15 15. With this mode of support the lamp shown may be made to assume any one of a large 5 number of angular positions entending over a large are. The extent of the arc can be Varied by varying the character of the-support to which the socket 16 is applied.

The present application is a division of an I00 application filed by me March 21, 1902, Serial No. 99,333.

I claim as my invention- 1. An electric lamp consisting of a tubular container, a vaporizable material therein,

means for conductingelectric current thereto, means for supporting the tube in a substantially horizontal position, and a pocket for-receiving the vaporizable material, such pocket being located below the main body .of the container.

2. An electric lamp consisting of a tubular container, a vaporizable material therein, means for conductingelectric currentthereto, means for supporting the tube in a substantially horizontal position, and a pocket for receiving the vaporizable material, such pocket being located below the main body of the container, and at or near the point of support.

3. An electric lamp consisting of a tubular container having an enlargement constituting a condensing-chamber at or near one end thereof, a vaporizable material in the container, means for conducting electric current thereto, means for supporting the tube in a substantially horizontal position, and a pocket for receiving the vaporizable material at the lower side of the enlargement.

4. An electric lamp consisting of a tubular container, a vaporizable material therein,

' means for conducting electric current thereto,

means for supporting the tube in a substantially horizontal position, and a pocket for receiving the vaporizable material, such pocket being formed inside a lug which constitutes a portion of the means of connection between the lamp and its support.

5. The combination with a horizontally-disposed electric vapor-lamp containing suitable electrodes and also containing a vapor adapted to become luminous under the influence of electric current, of lateral lugs or extensions near one end of the lamp, and a socket or holder having openings in which the said lugs or extensions may be held or rotated at will.

6, Thecombinationwithahorizontally-dis posed electric vapor-lam p containing suitable electrodes and also containing a vapor adapted to become luminous under the influence of electric current, of lateral lugs or extensions, and a socket or holder consisting of a U- shaped spring having eyes which surround the said lugs or extensions so as to permit the free rotation thereof.

Signed at New York, in the county of New York and State of New York, this 15th day of September, A. D. 1902.

PETER COOPER HEWITT.

Witnesses:

REGINALD BELFIELD, WM. H. OAPEL. 

